"Surprised, surprised, surprised?" Cao Xuefei pushed open the door and pounced towards Chen Zhangfei.

"Look at how many messages you've sent, and just sent one."

"I miss you." Cao Xuefei hugged Chen Zhang and said coquettishly, and Chen Zhang's worried heart was also settled.

"Light."

"Hmm."

"Slim."

"Hmm."

Suddenly, there was an inopportune rumbling sound in the stomach.

Cao Xuefei jumped down from Chen Zhang's arms, happily grabbed the lamb skewers on the table with one hand and said while eating: "Lao Chen, your craftsmanship is amazing, super delicious, by the way, I will also help you eat it." Having said that, the mutton skewer in his other hand had reached Chen Zhang's mouth.

looked at Cao Xuefei, who was gobbling up, and said happily: "Eat slowly, it's enough." ”

After eating and drinking, Chen Zhang took out a 10cm high square cylinder from the secret room. Mysteriously said, "This is a gift prepared to celebrate your ascent to the summit of Kawagebo." ”

"Show me." Cao Xuefei couldn't wait to come up and pick it up.

"This is a validated version of the magnet. Siwo, open the magnet operation authority to Cao Xuefei. As the eyes of the two flickered, the system voice sounded in their ears: "The verification has passed, and the magnetic sub-operation authority has been opened to Cao Xuefei." ”

Holding Cao Xuefei in his arms, Chen Zhang turned on the visual sharing function. "You see there's an extra magnet operation module in this place, but when you switch to external holographic projection mode, this module will be hidden."

After speaking, he grabbed Cao Xuefei's hand and gestured on the magnet operation interface, only to see 20 balls with a diameter of 1cm rising from the tube, forming a love pattern in the air. Under the brilliant light of Cao Xuefei, Chen Zhang's heart is also full of romantic flowers.

"Wow! Lao Chen, you have changed, you have become romantic. These magnets are amazing, how do you do that? Cao Xuefei was surprised and delighted.

Looking at her thirsty expression, Chen Zhang cleared his throat and said: "To put it simply, this magnet is composed of two hollow magnetic spheres inside and outside, and the coils are evenly distributed on the inner wall of the outer sphere and the outer wall of the inner sphere, and the two magnetic balls rotate separately under the action of electromagnetic force, and the magnets can move by controlling the current of the coil and using the force in different directions generated by the angular momentum. ”

Cao Xuefei couldn't help but kiss Chen Zhang's forehead and praised: "This head melon seed is really bright!" ”

Chen Zhang manipulated one of the magnets to fly into Cao Xuefei's hand and continued: "You can understand it as a boomerang. This hook groove can be attached to the rope, which can be used when you explore and climb. Click here to erect the scales, which can be used as a cutting tool by rotating them, or you can beat wild boars or something to improve your outdoor food. However, the target must be within your line of sight, and with the visual enhancement function of Siwo, you can lock on and track the target. Here is to adjust the kinetic energy of the magnet, and it can also be controlled by Siwo. ”

Cao Xuefei carefully played with the magnet in his hand: "In the future, I will use it more in different environments to accumulate more data for you." ”

"Or do you know me." As the two looked at each other, they couldn't help but smile.

"There are a total of 20 magnets in this cylinder, and the magnets can automatically return to the cylinder and replenish the power after flying out. Plug in the energy recovery system of clothes and shoes to charge the square tube. “

Speaking of this, Chen Zhang stared at Cao Xuefei's eyes and said seriously, "This square cylinder must be carried with you to protect your safety." ”

"Good! I really want to know what's in there. After saying that, he was ready to pick up his head.

Chen Zhang dodged and grabbed Cao Xuefei's hand, looked at her eyes that shone with charming light and asked, "What is the birthday gift buried for me on the top of the mountain?" ”

"Guess, if I arrange a one-on-one special training for you, you can board it and pick it up."

"I'll send the coordinates to the white tiger and let it swoop up and retrieve it."

"Why don't you go to heaven?"

"Listen to you, then I'll send the coordinates to Suzaku and let it fly over and get it back."

"It's a long time!" Cao Xuefei chased Chen Zhang squeamishly.

At the same time, in the top-secret document of the Siwo Xuanwu Project, Cao Xuefei appeared in the position of the third person.